Which do you best (most effective/easy to insert/actually holds in a remote area) for flats while tubeless road cycling? Please refer me to any existing thread that has this - I saw mentions in various threads on tubeless riding but nothing directly per my topic. Can either be used with any sealant?

I’ve only used Dynaplug and it doesn’t get any easier than this. They are also a lot better than regular bacon strips in both ease of use and durability. It doesn’t matter what sealant you use with any plugs.

Not a user (I'm more of a carry-a-spare-tube-in-case-sealant-doesn't-clog-the-puncture guy), but I've heard good things about Dynaplug.

I have a dynaplug racer and have used it a few times. My experience with it has not been great. It's pretty straightforward to use, but only seems to work on very specific punctures on the center of the tire tread, and even then it's a very temporary fix. I couldn't get one to work on a hole that was in the corner/sidewall, and they don't work very well on cuts (like from broken glass).

The last time I used it on the side of the road, the tire would only hold around 40psi without leaking. This was a double flat situation where I had to use my spare tube in one tire, and rely on a plug for the other. Thankfully I was only 10 miles or so from home - not sure that would've worked on a longer ride.

I've only used the DynaPlug and only once so far. Got a hole in the centre of my tyre that just wouldn't seal fully. Worked a treat and the plug is still in the tyre now and holding fine.

Jammed the tip in then pulled it out
Trimmed the extra off (optional, but my TT bike has limited clearance)
Spun the wheel to get more sealant to it
Kept riding

Now, like has been said above they do tend to work best on certain puncture types. This looked to be a sharp object clean hole. A slashed tyre or sidewall is going to be more problematic with any type of plug. I've heard some of the elite gravel racers will carry a few different kinds of plug (DynaPlug, Stans Dart, generic bacon strip) as some are better than others at certain types of hole.

The more profile to the tire tends to effect the effectiveness of a plug.
more tire also typically requires less psi, so a plug generally works.
I'm not a fan of the strips.

I got a nasty cut once that sealed using 2 Dynaplugs side by side. I also carry a couple of those large Dynaplug mega-plugs, but never had to use one. Superglue can also be effective on cuts.

Fitting a tube is an absolute last resort for me. Dynaplugs will save you a load of hassle in most cases. I have never had to fit a tube since going tubeless, to the point that I don’t even carry a spare tube unless on an epic ride in the middle of nowhere.

I have used Dynaplug once and the plug worked like a charm. Finished my fondo and then continued to ride on the tyre for another 200km. I would pushed it even further but I was starting to get a little paranoid that I was going to get stranded out in the middle of nowhere. When I took the tyre off the plug and Orange Seal had sealed the tyre up nicely. I need not have worried. I have no experience with Stan's.

I've never needed one yet but my Dynaplugs have worked 2 for 2 on rides with other people who've punctured. I've heard mixed reviews on Stan's darts.

Getting the right "size" for the purpose does make a difference in the success rate imo.
I stuff the biggest plug in the cut/puncture possible.

Yeah, I never could justify the 100$ it cost for that little thing (I was considering the Pill (Micro Pro) one at some point which is small and convenient but really expensive). I flat once every 2 years in average so carrying a 5$ tube during longer rides does the job for me. I patch it from the inside once I get home.

I been using Dynaplug (the cheap plastic one) for many years and many repairs, both road and mountain. The reason I used it so many times - my riding buddies like it so much, they use mine when they flat :-( Works like a charm, just use the biggest plug you can fit

A bacon strip is doubled over on itself when it goes in the tire, and hence fills a larger gap; with Dynaplugs, I more often have to shove in two of them in order to stop a leak.

No method is perfect: once, in a hurry, I jammed the Dynaplug into a tire and yanked (hard!) the tool back out of the tire...And the plug tore away from the brass piece and came out of the tire.

I found the brass heads of the last two I used rattling around inside the tire after the tire deflated again and I hit the ground.

I recently had a brass head detach inside the tire, but the plug was intact. The only problem was a rattling sound at low speeds...But that brass head won't hurt anything while bouncing around in there.

I've only tried the Dynaplug and only once. Worked as needed, and the plug has about 2300 miles and the tire has about 2800. Has never leaked, but I did put some super glue on the inside of the tire where the plug was inserted.

Used Dynaplugs for about 2.5 years. Saved my hide 4 or 5 times. Had one slit that they couldn't deal with but also had shoulder & sidewall holes they closed up perfectly. Current rear tyre is holding 80psi with 3 of them in it.

I used both on road and mtb and IMHO Dynaplug is a lot easier to use with more predictable/better results.

I am a DynaPlug fan, I’ve probably used it over a dozen times in five years. That said, I bought it before the Dart came out, so it wasn’t an option for me to consider at the time. A riding buddy has used Darts to good effect. I consider a single DynaPlug a permanent fix, I’ve done up to 3000 miles on a plugged tire, though for the last 1000 the brass head was rattling around. I’ve done as many as three plugs together to fix a hole, and have done up to a few hundred miles this way, but it seems holes that need multiple plugs will eventually begin to leak. This is where I wonder if the Darts might be better as they are supposed to react with the sealant and glue themselves to the tire.

As others have said, the DynaPlug won’t fix a slice, but in 17,000+ miles I’ve had to use a boot and a tube only once to get home.